End of the road breastfeeding - supplementing w/ milk or formula

midland12

My daughter is 11 months old and has pretty much weaned herself off of nursing.  I have not been able to get her to nurse lately and have had to pump and give her a bottle.  I can only get around 1-2 oz total pumping.  My freezer stash is decreasing rapidly and I will not make it much longer [maybe one week].  I am hoping to keep pumping to age 1 and supplement with either whole milk or formula for one month, but I am not sure which one.   Any one have this situation?  If so, did you go w/ milk or formula?  Thanks